173878461 has 16 divisors (see below), whose sum is σ = 266481600. Its totient is φ = 111921264.

The previous prime is 173878423. The next prime is 173878483. The reversal of 173878461 is 164878371.

It is not a de Polignac number, because 173878461 - 2¹⁰ = 173877437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173878561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110251 + ... + 111816.

It is an arithmetic number, because the mean of its divisors is an integer number (16655100).

Almost surely, 2^173878461 is an apocalyptic number.

It is an amenable number.

173878461 is a deficient number, since it is larger than the sum of its proper divisors (92603139).

173878461 is a wasteful number, since it uses less digits than its factorization.

173878461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222105 (or 222099 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 173878461 is about 13186.2982296018. The cubic root of 173878461 is about 558.1470013903.

The spelling of 173878461 in words is "one hundred seventy-three million, eight hundred seventy-eight thousand, four hundred sixty-one".